Check it:
http://www.coindesk.com/price/Earlier today, Bitcoin was at $289, and look at this now.
What do you think is the cause?
When will this uptrend end?
Look at the past of bitcoin this move is nothing, we can go 20 times up from here its possible. You have to remember once the whales accumulate what they need they are looking to push the price very high n order to dump. Pushing up to $500 or something isnt high enough for some.